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R. Meyer J. Köhler A. Homburg Explosives

R. Meyer J. Köhler A. Homburg Explosives

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367 Zinc Peroxide<br />

X-Ray Flash<br />

By using special X-ray tubes and very fast high-voltage circuitry, it is<br />

possible to generate and trigger ultrashort X-ray flashes down to the<br />

nano-/micro-second range.<br />

These X-ray flashes are an important mean of short-time photography<br />

because they enable fast occuring phenomena to be recorded by<br />

means of X-ray photographs.<br />

In practice, this possibility of short-time radioscopy of test specimens<br />

is made use of for shaped charges (W Shaped Charges). Thus, it is<br />

possible, during a desired time of detonation, to make a photographic<br />

record, in the form of single X-ray photographs, of the penetration and<br />

streaming behaviour of the sting into a target.<br />

Zinc Peroxide<br />

Zinkperoxid; peroxyde de zinc<br />

n ZnO2 · Zn(OH)2, n ≥3<br />

light yellow amorphous powder<br />

sum formula: ZnO2<br />

molecular weight: 97.379 g<br />

energy of formation: –344.8 kJ/mole<br />

enthalpy of formation: –347.3 kJ/mole<br />

oxygen balance: 16.43%<br />

density: 1.57 g/cm3 melting point: >150 °C<br />

Fp.: decomposition upwards of 200 °C<br />

Zinc peroxide is not hygroscopic and insoluble in water and organic<br />

solvents. The compound results from reaction of an ammoniacal zinc<br />

sulfate solution wit 30% hydrogen peroxide at 80°–95 °C. The bulk<br />

density and oxygen value can ba varied over a relatively wide range if<br />

certain temperature and concentration conditions are maintained.<br />

Zinc peroxide is used in pyrotechnic mixtures and primer compositions<br />

whose reaction products should not contain any corrosive and hazardous<br />

components (W SINTOX Primer Compositions).<br />

<strong>Explosives</strong>. Sixth Edition. Rudolf <strong>Meyer</strong>, Josef <strong>Köhler</strong>, Axel <strong>Homburg</strong><br />

Copyright © 2007 Wiley-VCH & Co. KGaA, Weinheim<br />

ISBN: 978-3-527-31656-4

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